Barrel



FIG. 1 is a top perspective of a barrel showing my new design;

FIG. 2 is a bottom perspective view looking from the right of FIG. 1;

FIG. 3 is a side elevational view;

FIG. 4 is a side elevational view looking from the right of FIG. 3;

FIG. 5 is a top plan view; and

FIG. 6 is a bottom plan view thereof.

The ornamental design for a barrel, as shown.